java 无法解析对 bean 'dataSource' Spring3 + Struts 2 的引用
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Cannot resolve reference to bean 'dataSource' Spring3 + Struts 2
提问by rafuru
I'm trying to manage the login system from spring with a Database, I have created my database following this tutorial: http://www.mkyong.com/spring/maven-spring-jdbc-example/
我正在尝试使用数据库从 spring 管理登录系统，我按照本教程创建了我的数据库：http: //www.mkyong.com/spring/maven-spring-jdbc-example/
And i have created a datasource.xmlfile with this content:
我创建了一个包含以下内容的datasource.xml文件：
<beans xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/login"/>
<property name="username" value="root"/>
<property name="password" value="pass"/>
</bean>
</beans>
and this is my security.xml:
这是我的 security.xml：
<?xml version="1.0" encoding="UTF-8"?>
<!--
- Configuracion de Muestra
-
-->
<beans:beans xmlns="http://www.springframework.org/schema/security"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security-3.1.xsd">
<beans:bean class="org.springframework.security.web.access.expression.DefaultWebSecurityExpressionHandler"/>
<http auto-config='true'>
<intercept-url pattern="/**" access="ROLE_USER" />
<form-login default-target-url='/example/index.jsp'
always-use-default-target='true' />
</http>
<authentication-manager>
<authentication-provider>
<jdbc-user-service data-source-ref="dataSource"
users-by-username-query="
select nombre,password
from usuarios where username=?"
authorities-by-username-query="
select u.nombre, ur.rol from usuarios u, usuarios_roles ur
where u.user_id = ur.user_id and u.username =? "
/>
</authentication-provider>
</authentication-manager>
</beans:beans>
But I'm having the next error on deploy:
但是我在部署时遇到了下一个错误：
Cannot resolve reference to bean 'dataSource' while setting bean property 'dataSource'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'dataSource' is defined
设置 bean 属性“dataSource”时无法解析对 bean“dataSource”的引用；嵌套异常是 org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'dataSource' is defined
I don't have idea what is wrong :(
我不知道出了什么问题:(
回答by Alex
Did you include the file with datasource via <import resource="datasource.xml" />?
您是否通过 将文件包含在数据源中<import resource="datasource.xml" />？
回答by vdolez
I had this very error at the beginning of the logs, except I also had an error at the bottom of the logs : java.lang.NoClassDefFoundError
我在日志的开头有这个错误，除了我在日志底部也有一个错误： java.lang.NoClassDefFoundError
A jar was missing, because it was not deployed. Simply adding it to tomcat before starting the server did the magic.
缺少一个 jar，因为它没有部署。在启动服务器之前简单地将它添加到 tomcat 就可以发挥作用。
